package alg20250306;

public class Text {
    public int peakIndexInMountainArray(int[] arr) {
            int left = 0, right = arr.length  - 1;
            while(left < right){
                int mid  = left + (right - left) / 2;
                if(arr[mid] > arr[mid - 1]){
                    left = mid;
                }else {
                    right = mid - 1;
                }
            }
            return left;
    }
}
